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JPS5378830

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DESCRIPTION JPS5378830
The sound velocity distribution decreases as the specification is directed to the edge of the
ultrasonic transducer L diaphragm fi [a horn shape that spreads toward the other end in a shape
that makes it possible to follow the number of curtains in an electret having a bellow shape An
acoustic transducer having a directional characteristic that focuses toward one side without an
almost secondary rope characterized by the above.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view schematically showing
an ultrasonic wave according to the present invention, FIG. 2 is a cross-sectional view of an
electret transducer, FIG. 3 is a view showing the details thereof, FIG. Is a diagram showing
directivity characteristics. 'L ... converter · 2 · · · horn, 3 · · · resonance plate, S · · · diaphragm, ・
・ ・ · · · counter electrode, 7 · · · capsule. Patent Assignee A. Car. G. Aksitancesier R. Kn.
Guerrethe, Gesellschaft, M., Beth Lechter, Huff Song)-Attorney Attorney Atsushi Sugimura 4-1EndPage: 3
04-05-2019
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